CVE-2026-21255HIGH 8.8EPSS p27.3%

CVE-2026-21255CVE-2026-21255

Description

Improper access control in Windows Hyper-V allows an authorized attacker to bypass a security feature locally.

Scoring

CVSS 3.18.8 (HIGH)
VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS0.36% probability of exploitation · percentile 27.3% · 2026-06-18T12:00:27Z
Published2026-02-10
Last modified2026-02-11

Underlying weaknesses· 1

CWE-284

References

  1. https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21255

1

TypeTargetConfidenceTier
WeaknessImproper Access Controlcwe-2840%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

CVE
CVE-2026-42972
CVE
CVE-2025-48822
CVE
CVE-2026-42829
CVE
CVE-2026-47652
CVE
CVE-2025-21370
CVE
CVE-2025-33067
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.